Before this change, when a property was configured with a default value
at LoopBack side and the database was returned a record with a missing
value for such property, then we would supply use the configured
default.
This behavior is problematic for reasons explained in #1692.
In this commit, we are introducing a new model-level setting called
`applyDefaultsOnReads`, which is enabled by default for backwards
compatibility.
When this setting is set to `false`, operations like `find` and
`findOrCreate` will NOT apply default property values on data returned
by the database (connector).
Please note that most of the other CRUD methods did not apply default
values on database data as long as the connector provided native
implementation of the operation, that aspect is not changing.
Also note that default values are applied only on properties with
`undefined` values. The value `null` does not trigger application of
default values. This is important because SQL connectors return
`null` for properties with no value set.
The query-string parser used by express
https://github.com/ljharb/qs#parsing-arrays
limits the size of arrays that are created from query strings to 20
items. Arrays larger than that are converted to objects using numeric
indices.
This commit fixes the coercion algorithm used by queries to
treat number-indexed objects as arrays. We still maintain a strict
understanding of an "array-like object" to limit the opportunity for
subtle bugs. In particular, the presence of non-index keys is an
indication that the object was not intended to be interpreted as
an array.
Make automatic validation optional on all CRUD methods in a loopback
model. This can be done in 2 ways
- set `automaticValidation` in the model settings
- set `validate` on the options passed when calling the crud methods
The options take precedence on the model setting.
By default the automatic validation remains true to be backwards
compatible
Add datasource and model setting `normalizeUndefinedInQuery`
to determine how it will handle undefined values. Options:
- nullify : converts undefined to null
- throw : throw an error on undefined value
- ignore : strip the key where undefined value is found
The default operation is to strip the key.
Samuel Reed
Janny
Miroslav Bajtoš
Shing
loay
nVitius
Ryan Graham
Heath Morrison
Amir Jafarian
Simon Ho
Sonali Samantaray
Miroslav Bajtoš
Raymond Feng
RobinBiondi
Simon Ho
Amir Jafarian
Bert Casier
Abe BW
Clark Wang
Federico Rampazzo
mdartic
Ryan Schumacher
James Cooke